A client is experiencing tachycardia and tremors. Lab values show elevated Free T4 and low thyroid stimulating hormone (TSH). Which diagnostic study will help the practitioner differentiate Graves' disease from other forms of hyperthyroidism?
Levothyroxine replacement test
Radioactive iodine uptake (RAIU) test
Adrenocorticotropic hormone (ACTH) stimulation test
Subtotal thyroidectomy
The Correct Answer is B
A. Levothyroxine replacement test: This test is used to assess the thyroid's response to synthetic thyroid hormone and is not used to differentiate types of hyperthyroidism.
B. Radioactive iodine uptake (RAIU) test: This test measures the thyroid gland's ability to absorb iodine, which helps differentiate Graves' disease (characterized by increased uptake) from other forms of hyperthyroidism, such as thyroiditis (which may show decreased uptake).
C. Adrenocorticotropic hormone (ACTH) stimulation test: This test is used to evaluate adrenal function and is not relevant for diagnosing or differentiating forms of hyperthyroidism.
D. Subtotal thyroidectomy: This is a surgical procedure rather than a diagnostic test and would not be used to differentiate between types of hyperthyroidism.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. B-type natriuretic peptide (BNP): BNP levels are elevated in heart failure due to increased pressure and stretch in the heart's chambers. It is a key marker used to diagnose and assess the severity of heart failure.
B. Troponin I: This marker is used to diagnose myocardial infarction (heart attack) rather than heart failure. Elevated troponin levels indicate damage to the heart muscle.
C. Blood urea nitrogen (BUN): BUN levels can be elevated in heart failure due to decreased renal perfusion, but it is not as specific for diagnosing heart failure as BNP.
D. Platelet levels: Platelet levels are not directly related to the diagnosis of heart failure. They are more relevant for assessing clotting disorders and other conditions.
Correct Answer is B
Explanation
A. A 40-year-old patient with Cushing syndrome and gynecomastia: While Cushing syndrome requires ongoing management and monitoring, gynecomastia alone is not an urgent concern compared to the symptoms described in option B.
B. A 58-year-old patient with Addison's disease who is exhibiting confusion: Addison's disease can lead to adrenal insufficiency, and confusion could indicate an adrenal crisis or severe electrolyte imbalance. This is a critical situation requiring immediate assessment to prevent severe complications.
C. A 45-year-old patient with Graves' disease and exophthalmos: Graves' disease with exophthalmos is significant but does not typically represent an immediate life-threatening condition compared to the symptoms associated with Addison's disease.
D. A 47-year-old patient with hypothyroidism who is asking for a warm blanket: This patient’s request for a warm blanket suggests they might be experiencing symptoms related to hypothyroidism, such as feeling cold. However, this is less urgent compared to the confusion and potential crisis in option B.
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